US2907871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable electric battery lamps
Assignee: —
•
Filing: —
•
Granted: 1959-10-06
•
Expires: 1976-10-06
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:13
CPC Classifications
F; F21; F21V; F21V25/00; F21V25/02; F21V25/04; F21L; F21L4/00; F21L4/005; F21V23/00; F21V23/04; F21V23/0414; F21V23/0442
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1806869A
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US544034A
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US1262517A
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US1266779A
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Cited
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US2165194A
Cited
US2272744A
Cited
US2330851A
Cited
US2518437A
Cited
US2690503A
Cited
US2749434A
Cited
US2708714A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-05 | 1963-04-06 | 1963-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-05 | 1967-04-06 | 1967-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-05 | 1971-04-06 | 1971-10-06 | $7700.00 | Window Closed / Lapsed |